Distributor



1934- M. MALLOFH 1,984,275

DISTRIBUTOR FiledMay 18, 1.95 3 Sheets-Sheet l 3 INVENTOR. 6 N/m/o/v MHLL om.

ATTORNEY.

M. MALLORY Dec. 11, 1934.

DISTRIBUTOR Filed May 18, 1953 2 Sheets-Sheet 2 N N h uNNNNNNNN N INVENTOR. Mama/v Mm L0 5 Y.

ATTORNEY.

Patented Dec. 11, 1934 UNITEDCSTIATES PATENT OFFICE nrs'ramo'roa Marion Mallory, Detroit, Mich assignor to Mallory Research Company, Toledo, Ohio, a corporation of Ohio Application May 18, 1933, Serial No. 671,667

3 Claims. (Cl. 200-19) The object of this invention is to reduce the 17 by the contact created by the pressure exerted cost of the distributor cover and to improve its by the clamps 18 and 19. The high tension elecreliability under severe service conditions. tricity, which enters at 17, is distributed to 13 An additional object is to reduce the electrical and 14 in the manner shown in Figure 7. High 5 interference with radio reception. tension wires 21, 22, 23, 24, 25 and 26 are forced 5 The distributors now in use on automobiles into the rubber disc 11 in the same way that for distributing the high tension electricity to 1'1 was forced into .the disc 11. These wires the spark plugs are either expensive to make, are pressed down to their high tension terminals or, if they are made cheaper, are not reliable, 13, 14 etc. by the clamps 18 and 19. The rubber especially when subjected to moist air and rain. pad 11 yields sumciently so as to make a water- 10 The problem to be solved was to make an tight connection with the cables and also with inexpensive distributor that could not be shorted the r001. 16. Water is thus prevented from reachby wet air being blown over it. ing the actual metal to metal contact where In the drawings: the exposed ends of the cables 17, 23, 25 etc.

15 Figure 1 shows the preferred form of my intouch the high tension terminals 20, 14, 13 etc. 1 ventionas used on an automobile ignition device, In Figure 3, a rubber pad 31 and bakelite being a cross-sectional elevation taken on plane cover 32 (which may, of course, be a metal cover) 1-1 of Figure 2. are pressed down onto the top of the coil 4'1 Figure 2 is a plan view of Figure 1 looking by means oi two screws 28 and 29, which take d wnthe place of the spring clamps 18 and 19 of 20 Figure 3 shows an improved cover construction Figures 1 and 2. This coil has a high tension applied to a high tension ignition coil, being a terminal 30, against which the exposed end of cross-sectional elevation taken on plane 3-3 of the high tension terminal 17 is pressed when ure v the rubber pad 31 is pressed down onto the coil Figure 4 is a plan view looking down on by means of the screws 28 and 29. 25 ure 3. In Figure 7 and Figure 8 is illustrated the Figure 5 shows an alternative construction, means for preventing the distribution of the high being a cross-sectional elevation taken on plane tension current disturbing the radio reception on 5-5 of Figure 6. a car. 33 is thehigh tension entrance connec- Fi r 6 is a pl n view lookin down on tion. 49 is one or the contacts to which this high 30 Figure 5- tension electricity is distributed. 34 is the mova- F u e '7 shows the distributor more in detail. ble high tension connection located between 33 together with the specific details directed to the and the group of high tension terminals of which elimination of radio interference, being a crossone only, 49,is illustrated in Figure 'I. The mova- 35 sectional vati n ta n n p an 77 01 ble connection 34 is mounted on the rotating insu- 85 u e 8- lated arm 35, which is mounted on the end of the Figure 8 S a P View looking up 8 cam shaft 38. In Figure 8 is illustrated a circular Figure 9 is a View Of an enlarged Portion groove or annular trough 37. Into this groove,

Figure the terminals 49 etc. project flush with the walls 40 Figure 10 is another enlarged view of Figure 7. of the groove This groove is Split up into Figure 11 is another enlarged view of Figure 7. In these figures, the chief novel feature of 5 portions by Six projections my invention resides m the provision of the The outer end of the conducting strip 34 carries circular rubber pad or cushion 11 enclosed in Contact disc 38, which is Pressed onto the a bakelite or metallic cover 12. See Figs. 1, 3 1111111151 Walls Of the circular groove by the and 5. 13 and 14 are two of the high tensio Spring tension, which is built into the strip 34. terminals mounted in th 1 1 of th The clearance between 38 and 49 can thus be retributor housing 15. 17 is the high tension lead duced to a minimum. through which all the electricity flows, which All the other details of Figure 7 are identical 50 is subsequently distributed through the high tenwith the construction shown in Figure 1, which 50 sion terminals 13 and 14. The high tension lead has already been described, except that a screw 51 17 is made a tight fit in the rubber pad 11, which is substituted for the clamps 18 and 19. pad 11 is held tightly down by the clamps 18 In Figures 9, 10 and 11, enlarged detailed views and 19. A central terminal 20, located in the of Figure 7 are shown. A conical shoulder 53 is root 16, receives the high tension current from shown projecting from the rubber pad 11 and 55 engaging with a curved fillet 52 in the top of the distributor housing 16.

The purpose of this conical projection 53 and the curved surface 52 is to ensure that there is engines, means for connecting a high tension wire I to a high tension terminal comprising a cover having a casing of relatively hard material, a soft rubber pad within said casing, high tension wires imbedded in said pad and projecting therefrom, means for pressing said cover torsaid terminal so that the high tension wire is held in contact with said terminal.

3. In an ignition circuit for internal combustion engines, means for connecting a. high tension wire to a high tension terminal comprising a cover having a casing'of relatively hard material, a soft rubber pad within said casing, high tension wires imbedded in said pad and projecting therefrom, a conical projection surrounding the wire as it projects from the pad, means for pressing said cover to said terminal so that the high tension wire is held in contact with said terminal and the conical projection crushed against said high tension wire.

MARION MALLORY. 

